[CI] Prune redundant CPU test overhead (#34309)

Co-authored-by: hnyls2002 <lsyincs@gmail.com>

test/run_suite.py

@@ -319,10 +319,9 @@ def run_a_suite(args):
         for f in glob.glob(
             os.path.join(script_dir, "registered", "**", "*.py"), recursive=True
         )
-        if not f.endswith("/conftest.py")
-        and not f.endswith("/__init__.py")
-        and not f.endswith("/cpu/utils.py")
-        and not f.endswith("/run_tests.py")
+        # conftest.py / __init__.py are pytest+package structure, never
+        # registered tests, and must not be executed as one.
+        if os.path.basename(f) not in ("conftest.py", "__init__.py")
     ]
 
     # Strict: all discovered files must have proper registration